Top-seeded Mariano Puerta defeated Costa Rican qualifier Juan Antonio Marin 6-2, 6-2 Thursday at the Priority Telecom Open. Puerta's win will move him into the world top 10 for the first time and set up a quarterfinal against the Czech Republic's Ivo Minar, who beat Santiago Ventura of Spain 7-6 (5), 6-4.